Nicolai Frederik Severin Grindtvig, a Danish writer, born at Udby, Seeland, Sept. 8, 1783, died in Copenhagen, Sept. 2, 1872. He studied theology at Copenhagen, and in 1810 began to preach in that city. His doctrines offended the clergy, and he finally separated from the orthodox Lutheran church and became the head of a distinct school opposed to centralization in church government. In 1848 he engaged in politics, and became an influential leader in the diet of the Danish party, in opposition to German influence and in favor of a union of the Scandinavian nations. Grundtvig published two collections of sermons, a collection of hymns, and many historical works, among which are : Nordens Mytliologie (1808; 2d ed. revised, 1832); Kort Begreb of Verdenskronike ("Short Sketch of the History of the World," 1812); translations of Saxo Grammaticus and Snorro Sturleson (6 vols., 1818-22); Haand bog i Verdendhistorien ("Manual of Universal History," 4 vols., 1833-'43). Among his poetical works are: Optrin of Kampelivets Under-gang i Nord (2 vols., 1809); Roeskilde-Riim (1814); and Nordiske Smaadigte (1838). From 1816 to 1820 he published a literary journal, Dannevirke, and from 1848 to 1851 a political weekly, Danskeren. During the Schleswig-Holstein war he wrote spirited songs for the Danish cause.